Window-envelop machine



E E. BERODKES.

WINDOW ENVELOP MACHINE.

APPLICATION HLEB JULY 29,1919..

Patented Apr. 27,1920.

JNVENTUR ($6.5m.

UNITED STATES PATENT OFFICE.

. EDWARD EAR-NEST 'BROOKES, OF TORONTO, ONTAItIO, CANADA, ASSIGNOR TO W. J.

GAGE & COMPANY, LIMITED, OF TORONTO, CANADA.

WINDOW-ENVELOP MACHINE.

Specification of Letters Patent. Patented Apr. 27, 1920.

Application filed July 29, 1919. Serial No. 314,229.

. invented certain new and useful Improve-.

ments in WVindow-Envelop Machines, of which the following is a specification.

This invention relates to apparatus adapted to secure in position the transparent panels or windows used to close the window openings in window envelops, and my object is to devise apparatus of this type which may be used with. existing envelop machines and by means of which the panels may be applied to openings located in any position in the front of the envelop.

I attain my object by means ofthe constructions hereinafter described and illustrated in the accompanying drawings in which- 1 Figure 1 is a side elevation of the apparatus;

Fig. 2 a front elevation of the same; and

gig. 3 a side elevation, partly in section; an r Fig. 4 a sectional detail of the rotary knife of the severing device.

In the drawings like numerals of reference indlcate corresponding parts 1n the different machines.

1 is a frame suitably shaped to support.

the different parts. On the top of this frame is journaled the supply roller 2 v which carries a band 3 of windowniaterial.

From this roller the band passes between the rollers of the severing device, hereinafter more particularly described, to the feed rollers 41:. From these feed rollers the band cated,

passes between the guide members 5 and 6 to a position beneath the rotary window applying roller 7 5 which lies close above the surface of the endless carrier 8 for theenvelop blanks 9. Between the feed rollers and the severing rollers a gumming device constructed as hereinafter described is lo- The severing device comprises a plain roller 10 supported in slotted bearings and normally pressed toward the roller 11 by coil springs 12. The roller 11 is longitudinallyslotted and a knife 13 is supported therein. normally resiliently extended, by

springs 14:. Grub screws 15 hold the knife 13 in place and limit its extension, (see Fig.

[4.) This knife is discontinuous and does not of the guide 6.

extend the full width of the band so that the band is only partly not completely severed. The roller 11 is of'a circumference substantially equal to the length of the piece of material required to form the windew, and is driven as hereinafter described.

16, a pick-up roller 17 a transferring roller 18, and a gumnnng roller 19. The rollers 17 and 19 aredriven as hereinafter described, while the transferring roller is carried on the pivoted arms 20; The guide 5 extends straight down from beneath the feed rollers 4 parallel to the upper portion The lower end of this guide 6, which is formed of resilient'material, is curved concentric with the applying roller 7.. It is preferably adapted to be substantially engaged by the projections '21 on the roller, these projections being formed of some comparatively soft'fclinging material, such as soft rubber.

The driving mechanism is arranged substantially as follows: 22 is any convenient shaft of the envelop machine to which the window attaching device is applied. This shaft will be one which is geared in some manner with one of the rollers or wheels carrying the carrier 8. This is illustrated diagrammatically in Fig. 3, sprocket gearing 23 being shown whereby the shaft 22 is driven in'synchronis'm with the roller, 24 carrying the carrier 8. By means of sprocketgearing 25 the spindle of the roller 10 is driven from the shaft 22. The feed rollers 1 are preferably geared together by means'of the gearing 27 (see Fig. 1). On the spindle 26 is secured a gear pinion 28 meshing with a suitably journaled, intermediate gear wheel 29 which meshes with a gear pinion 3O 'securedto the spindle of the window applying roller 7.

he gumming apparatus is driven by means of a gear pinion 31- meshing with one i of the gears 27. This pinion 31 meshes with the gear wheel 32 fast on the spindle of the pickup roller 17 and the gear wheel 33 seturn meshes withthe gear wheel 36 secured to the spindle of the roller 11. The gearing is so proportioned that theperipheral speed of the feed rollersand the severing rollers is substantially the. same, while the peripheral speed of the applying roller may be somewhat greater, hence the applying roller by virtue of the fact that the projections 21 thereon press the band of Window-forming material against the curved lower end of the guide member 6 and against the envelop blank, pull on the end of the band, and' break-away the'part of the severed portion from thefremainder of the band.

It will be noted particularly on reference to Figs. 2. and 3 that the gumming rollers are arranged to'gumjonly the edges of the band of window material, andin-additiqn partjonlyr of the endsof each separate win-- dow page. The gummin'g roller .is therefore formed with circular fianges 37 from which extend short inward projections -38.

There isthereforeafter the band has been gummed a central portion along the band where there is'no gum. The guides 5 and 6 are in width no greater thanthis ungummed portion of the band and the applying roller and its projections are preferably no wider than the guides, so that the gummed portions .of the end piece-of the 'band of window forming material do not contact with any part Whatever? until they reach a position to contact with theenvelop blank, so that after the bands gummed .none of the-'ad esive material is rubbed from the band 35 nd perfect attachment to the envelop bla'nl r is secured.

It is necessary to arrange the apparatus I so that the window may be attached in any desired position inthe front of the envelop.

This necessitates some arrangement whereby the position of the device transversely of the envelop machine may be adjusted, and also some means of adjustment whereby the relative positions of the envelop blank and the window bei'ngapplied may be altered. This latter adjustment I attain by "providing means whereby the position of'the projections on the applying roller may be varied relative to the traveling carrier 8. w This is readily effected by making the sprocket wheels 25 rotarily adjustable on the shaft 22. This may be accomplished, in various manners. I illustrate the wheel as being divided and clamped by a'split collar 40 pro-.

yided with clamping bolts a l. The adjust- 1. The combination with an envelop machine provided with a traveling carrier for envelops of-a window attaching device secured to the machine and adjustable thereon transversely of the carrier; gearing between the carrier and the window attaching device; and means included in said gearing for varying the timing of the attaching device relative'to the carrier.

2. A window attaching device for window envelops comprising a frame; a supply roller for a band of Window material journaled on said frame; feed rollers journaled on the frame and between which the hand passes;' means located between the feed rollers and the. supply roller for partly severing the v band; a gumming device located. between the feed rollers. and the severing device adapted to gum the edgesiof the band; a ro- .tary applying device" having agreater peripheral speed than the feed rollers and therefore adapted'to tear off from the band a' partlyseparated window; and a guide adapted to guide the band to a position for engagement by the applying device, said guide being engageable by the applying device to tear off the partly separated window.

3'. A window attaching device substan- .tially as set forth in claim 2' in which the guide is narrower than the band and the lower end is resilient and is curved substantially concentric to the applying device, the .latter being provided with resilient projections adapted to press the band against and e. A windowattaching device substantially as set forth in claim 2 in which the guideis tubular at its upper part and single at the lower part, theouter side being extended downward and curved under the applying device.

Signed at Toronto, canada this 5th day of June 1919.

EDWARD Ea NEs r BROOKES.

draw it along thecurved end of the guide. 

